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Vocabulary Entry
alum
|noun
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N
noun
A type of chemical compound often used in dyeing and as a coagulant in water purification.
Example Sentences
"The artist used alum in the dyeing process for the fabric."
"Alum can help clarify water in a swimming pool."
"Some people use alum as a pickling agent for preserving vegetables."
"The recipe called for alum to enhance the crispness of the apples."